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• W4298145532 startingPage "103189" @default.
• W4298145532 abstract "The deep purification of trace heavy metals in drinking water is of great significance and has received considerable attention worldwide. 2,5-dimercapto-1,3,4-thiadiazole (DMTD) functionalized magnetic ZIF-8 adsorbent (Fe 3 O 4 @ZIF-8-DMTD) using a novel one-pot post coordination modulation method at room temperature could effectively adsorb trace heavy metals from drinking water through cooperating with the abundant functional groups and surface charges. The negative surface charges promoted the rapid accumulation of trace heavy metals on the surface of the adsorbent, meanwhile, the abundant thiol/nitrogen sites contributed to their adsorption, thus the adsorption rate and adsorption capacity of trace heavy metals were greatly improved. For trace Pb(II) (150 ppb), the effluent concentration could meet the World Health Organization (WHO) standard (≤10 ppb) within 10 s after adsorption by Fe 3 O 4 @ZIF-8-DMTD, and the cumulative adsorption capacity that met WHO standard was 12.11 mg/g. Fe 3 O 4 @ZIF-8-DMTD also showed high stability in a broad pH range and excellent adsorption performance in a wide low concentration range. The effluent concentration still could meet the WHO standard when the initial Pb(II) concentration was 11.70 ppm, and the corresponding adsorption capacity reached 35.00 mg/g. Moreover, the capture experiments for multiple heavy metals that coexisted in tap water showed that the effluent concentrations of Hg(II), Pb(II), Cu(II), Cd(II), and Cr(III) could be lower than the allowable limits in a few minutes. The adsorbent could also be easily recovered using magnets and regenerated by thiourea solution, which showed great application potential for the purification of trace heavy metals in drinking water. • Fe 3 O 4 @ZIF-8-DMTD was synthesized by a facile post coordination modulation method. • Cooperation of abundant SH/N groups with negative charge promotes adsorption. • Adsorbent shows ultrafast uptake speed, large uptake capacity and good stability. • Adsorbent exhibits superior capture ability for multiple trace heavy metals. • Fe 3 O 4 @ZIF-8-DMTD can be recovered with magnets and easily regenerated." @default.
• W4298145532 created "2022-10-01" @default.
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• W4298145532 date "2022-10-01" @default.
• W4298145532 modified "2023-10-02" @default.
• W4298145532 title "Thiol/nitrogen functionalized Fe3O4@ZIF-8-DMTD by one-pot post coordination modulation for efficient and rapid removal of trace heavy metals from drinking water" @default.
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• W4298145532 doi "https://doi.org/10.1016/j.jwpe.2022.103189" @default.
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